HD – WH – Directional Valve With Fluidic Operation
Enhance your hydraulic system's performance and reliability with the HD WH Series Directional Valve. Available through Thm Hydraulics, this direct-operated directional spool valve is specifically designed with fluidic (hydraulic) operation to ensure smooth, consistent, and efficient flow control. Engineered to handle maximum operating pressures up to 315 bar and flow rates reaching 120 L/min, the WH series is a robust solution for machines where electrical solenoid operation is either impractical or where pure hydraulic pilot signals are preferred. With its standardized mounting pattern and precision-machined spool, this valve provides the dependable shifting required for high-cycle industrial applications.
Core Technical Specifications:-
- Component Architecture: Fluidic (Hydraulic) Operated Directional Spool Valve
- Nominal Sizes: Size 6 (NG6) and Size 10 (NG10)
- Maximum Operating Pressure: Up to 315 bar
- Maximum Flow Capacity: Up to 120 L/min (Size 10)
- Mounting Style: Subplate Mounting
- Standardization: Porting pattern to DIN 24 340 Form A, ISO 4401, and CETOP-RP 121H
Key Features & Engineering Advantages:-
- Smooth Fluidic Actuation: By utilizing hydraulic pressure for shifting rather than electrical solenoids, the WH series provides a "softer" engagement. This reduces hydraulic shock (water hammer) within the circuit, protecting your hoses, seals, and actuators from premature fatigue.
- Precision Stroke Limit Control: Available with an optional stroke limit feature for the two-position valve configuration. This allows maintenance teams to mechanically tune the spool travel, providing granular control over the speed and volume of fluid transition during shifting.
- Universal "Drop-In" Compatibility: Fully compliant with ISO 4401 and CETOP standards, ensuring the HD WH valve can be used as a high-performance replacement for existing valves on standard manifold blocks without any modifications.
- Rugged Direct-Operated Design: The simplified mechanical structure of the direct-operated spool minimizes moving parts, resulting in a highly reliable valve that excels in harsh industrial environments where electronic components might fail.
- Compact Subplate Mounting: Designed for easy installation on hydraulic manifolds, allowing for a clean, leak-free, and space-saving assembly of the entire control system.
Ideal Industry Applications:-
The fluidic operation and high-pressure capacity of the HD WH Valve make it the premier choice for:
- Explosion-Proof Environments: Serving as a safe, non-electric alternative for chemical plants, mining operations, and oil and gas facilities where electrical sparking must be avoided.
- Heavy Industrial Pressing: Managing the pilot signals or direct flow for high-tonnage stamping and forging presses.
- Primary Metal Processing: Operating in high-heat zones of steel mills and foundries where electronic solenoid coils would be prone to heat-related failure.
- Mobile & Marine Hydraulics: Providing reliable directional control for winches, steering systems, and auxiliary functions in environments exposed to heavy moisture or salt spray.
Why Choose the HD WH Series?
- Eliminate Electrical Failure: In environments with high vibration, heat, or moisture, fluidic operation removes the common failure points associated with electrical coils and wiring.
- Tailored Flow Response: The optional stroke limiter gives you the power to "dampen" the shifting, resulting in a much smoother machine movement compared to standard ON/OFF solenoid valves.
- Built for the Long Haul: The robust DIN/ISO standardized housing ensures that this valve remains a staple of your hydraulic inventory for years of service.
